John Stuart Mill

Raised since early childhood to promote Jeremy Bentham's theory of utilitarianism, John Stuart Mill both expanded on those ideas and developed many of his own regarding individual freedom and liberty. Inspired by his good friend and wife, Mill was one of the first men to publish a book explicitly on women's rights; he viewed the subjugation of women as one of the worst vestiges of ancient society. Mill is probably best known for his harm principle and the theory of tyranny of the majority.